{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["cause effect", "else", "entity destination", "entity origin"], "input": "the hidden preamble or timing signal is employed to mark the time of commencement of the transmission of information pulses from a transmitter ."}
{"cause effect": [{"subject": "transmission", "object": "transmitter"}], "else": [], "entity destination": [], "entity origin": []}